The only time I've ever had a problem with the LibreLink app was a couple of summer’s ago when there was a major update of the app and everyone just got a blank screen (I think maybe this was iPhones only). Since then I have had no app based problems, just dodgy sensors that lose signal. Abbot always replace them after a quick phone call.I'm getting my phone upgrade within the next month and I was considering switching to iPhone, how often do issues like this occur with the Libre app?